Using these fenders is easy. First, take them out of the package. Then, punch out the shape and fold along the perforated lines. After that, use the hook-and-loop straps to attach them to your bike in one of the multiple mounting positions. When it comes to maintenance, just wipe them clean with a damp cloth. Make sure to check the straps regularly to ensure they're tight. Also, store them in a dry place when not in use to keep them in good condition.